2. The "Narratio Prima" of Copernicus
Known generally as the Narratio prima, this was the first appearance in print
of Copernicus's revolutionary idea of placing the Earth at the center of the
solar system. Only some two dozen copies are known to exist and only five of
them are in America.

Known generally as the Narratio prima, this was the first appearance in print of Copernicus's revolutionary idea of placing the Earth at the center of the solar system. Only some two dozen copies are known to exist and only five of them are in America.